./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:41:56,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:41:56,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:41:56,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:41:56,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:41:56,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:41:56,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:41:56,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:41:56,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:41:56,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:41:56,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:41:56,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:41:56,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:41:56,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:41:56,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:41:56,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:41:56,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:41:56,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:41:56,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:41:56,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:41:56,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:41:56,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:41:56,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:41:56,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:41:56,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:41:56,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:41:56,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:41:56,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:41:56,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:41:56,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:41:56,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:41:56,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:41:56,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:41:56,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:41:56,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:41:56,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:41:56,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:41:56,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:41:56,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:41:56,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:41:56,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:41:56,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:41:56,686 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:41:56,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:41:56,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:41:56,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:41:56,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:41:56,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:41:56,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:41:56,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:41:56,690 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:41:56,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:41:56,691 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:41:56,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:41:56,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:41:56,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:41:56,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:41:56,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:41:56,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:41:56,693 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:41:56,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:41:56,693 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:41:56,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:41:56,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:41:56,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:41:56,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:41:56,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:41:56,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:41:56,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:41:56,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:41:56,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:41:56,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:41:56,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:41:56,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:41:56,696 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:41:56,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:41:56,697 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:41:56,697 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:41:56,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:41:57,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:41:57,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:41:57,009 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:41:57,009 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:41:57,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-08-30 17:41:58,153 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:41:58,462 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:41:58,463 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-08-30 17:41:58,475 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f56c2a51/5ae6f60f843c4889b442c33136a328b8/FLAG775fabb31 [2023-08-30 17:41:58,488 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f56c2a51/5ae6f60f843c4889b442c33136a328b8 [2023-08-30 17:41:58,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:41:58,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:41:58,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:41:58,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:41:58,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:41:58,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:58,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af63f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58, skipping insertion in model container [2023-08-30 17:41:58,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:58,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:41:58,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:41:58,729 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2023-08-30 17:41:58,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:41:58,907 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:41:58,920 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2023-08-30 17:41:58,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:41:58,992 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:41:58,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58 WrapperNode [2023-08-30 17:41:58,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:41:58,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:41:58,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:41:58,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:41:59,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,045 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-08-30 17:41:59,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:41:59,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:41:59,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:41:59,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:41:59,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:41:59,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:41:59,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:41:59,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:41:59,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (1/1) ... [2023-08-30 17:41:59,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:41:59,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:41:59,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 17:41:59,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 17:41:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:41:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:41:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:41:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:41:59,163 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 17:41:59,163 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 17:41:59,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:41:59,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:41:59,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:41:59,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:41:59,164 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:41:59,312 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:41:59,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:41:59,459 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:41:59,465 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:41:59,472 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 17:41:59,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:41:59 BoogieIcfgContainer [2023-08-30 17:41:59,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:41:59,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:41:59,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:41:59,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:41:59,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:41:58" (1/3) ... [2023-08-30 17:41:59,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b25afdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:41:59, skipping insertion in model container [2023-08-30 17:41:59,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:58" (2/3) ... [2023-08-30 17:41:59,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b25afdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:41:59, skipping insertion in model container [2023-08-30 17:41:59,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:41:59" (3/3) ... [2023-08-30 17:41:59,483 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-08-30 17:41:59,493 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:41:59,502 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:41:59,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 17:41:59,502 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:41:59,566 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 17:41:59,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 125 flow [2023-08-30 17:41:59,665 INFO L130 PetriNetUnfolder]: 1/59 cut-off events. [2023-08-30 17:41:59,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:41:59,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-08-30 17:41:59,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 60 transitions, 125 flow [2023-08-30 17:41:59,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 105 flow [2023-08-30 17:41:59,678 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:41:59,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 105 flow [2023-08-30 17:41:59,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 105 flow [2023-08-30 17:41:59,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 105 flow [2023-08-30 17:41:59,729 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2023-08-30 17:41:59,729 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:41:59,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-30 17:41:59,731 INFO L119 LiptonReduction]: Number of co-enabled transitions 240 [2023-08-30 17:42:01,761 INFO L134 LiptonReduction]: Checked pairs total: 592 [2023-08-30 17:42:01,762 INFO L136 LiptonReduction]: Total number of compositions: 40 [2023-08-30 17:42:01,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:42:01,781 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b90664e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:42:01,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 17:42:01,785 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 17:42:01,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:42:01,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:01,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 17:42:01,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 17:42:01,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1761964991, now seen corresponding path program 1 times [2023-08-30 17:42:01,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:01,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95313777] [2023-08-30 17:42:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95313777] [2023-08-30 17:42:02,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95313777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:02,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:02,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:42:02,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553060897] [2023-08-30 17:42:02,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:02,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:42:02,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:42:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:42:02,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 100 [2023-08-30 17:42:02,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:02,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 100 [2023-08-30 17:42:02,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:02,182 INFO L130 PetriNetUnfolder]: 13/40 cut-off events. [2023-08-30 17:42:02,182 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:42:02,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 40 events. 13/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 7 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 72. Up to 19 conditions per place. [2023-08-30 17:42:02,184 INFO L137 encePairwiseOnDemand]: 97/100 looper letters, 11 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-08-30 17:42:02,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 14 transitions, 57 flow [2023-08-30 17:42:02,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:42:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:42:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2023-08-30 17:42:02,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966666666666667 [2023-08-30 17:42:02,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2023-08-30 17:42:02,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2023-08-30 17:42:02,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:02,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2023-08-30 17:42:02,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,217 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 25 flow. Second operand 3 states and 179 transitions. [2023-08-30 17:42:02,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 14 transitions, 57 flow [2023-08-30 17:42:02,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:42:02,221 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 32 flow [2023-08-30 17:42:02,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-08-30 17:42:02,227 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 2 predicate places. [2023-08-30 17:42:02,227 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 32 flow [2023-08-30 17:42:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:02,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:02,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:42:02,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 17:42:02,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:02,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1752855910, now seen corresponding path program 1 times [2023-08-30 17:42:02,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:02,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920963674] [2023-08-30 17:42:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920963674] [2023-08-30 17:42:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920963674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:02,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:02,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:42:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904793019] [2023-08-30 17:42:02,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:42:02,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:42:02,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:42:02,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-08-30 17:42:02,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:02,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-08-30 17:42:02,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:02,405 INFO L130 PetriNetUnfolder]: 6/30 cut-off events. [2023-08-30 17:42:02,405 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:42:02,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 30 events. 6/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 2 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 61. Up to 18 conditions per place. [2023-08-30 17:42:02,406 INFO L137 encePairwiseOnDemand]: 95/100 looper letters, 9 selfloop transitions, 5 changer transitions 0/15 dead transitions. [2023-08-30 17:42:02,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 70 flow [2023-08-30 17:42:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:42:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:42:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-08-30 17:42:02,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633333333333334 [2023-08-30 17:42:02,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-08-30 17:42:02,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-08-30 17:42:02,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:02,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-08-30 17:42:02,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,415 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 32 flow. Second operand 3 states and 169 transitions. [2023-08-30 17:42:02,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 70 flow [2023-08-30 17:42:02,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:42:02,416 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 51 flow [2023-08-30 17:42:02,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-08-30 17:42:02,417 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 3 predicate places. [2023-08-30 17:42:02,417 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 51 flow [2023-08-30 17:42:02,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:02,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:02,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:42:02,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 17:42:02,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:02,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1903195232, now seen corresponding path program 2 times [2023-08-30 17:42:02,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:02,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607792174] [2023-08-30 17:42:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:02,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607792174] [2023-08-30 17:42:02,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607792174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:02,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:02,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 17:42:02,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696041238] [2023-08-30 17:42:02,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:02,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 17:42:02,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:02,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 17:42:02,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:42:02,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 100 [2023-08-30 17:42:02,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:02,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 100 [2023-08-30 17:42:02,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:02,667 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-08-30 17:42:02,668 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 17:42:02,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 25 events. 4/25 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 69. Up to 15 conditions per place. [2023-08-30 17:42:02,674 INFO L137 encePairwiseOnDemand]: 96/100 looper letters, 10 selfloop transitions, 4 changer transitions 1/16 dead transitions. [2023-08-30 17:42:02,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 95 flow [2023-08-30 17:42:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:42:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:42:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2023-08-30 17:42:02,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325 [2023-08-30 17:42:02,676 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 213 transitions. [2023-08-30 17:42:02,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 213 transitions. [2023-08-30 17:42:02,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:02,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 213 transitions. [2023-08-30 17:42:02,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,679 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 51 flow. Second operand 4 states and 213 transitions. [2023-08-30 17:42:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 95 flow [2023-08-30 17:42:02,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:42:02,680 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 54 flow [2023-08-30 17:42:02,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-30 17:42:02,681 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2023-08-30 17:42:02,681 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 54 flow [2023-08-30 17:42:02,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:02,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:02,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:42:02,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 17:42:02,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash -414641235, now seen corresponding path program 1 times [2023-08-30 17:42:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:02,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529532447] [2023-08-30 17:42:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:02,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:02,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529532447] [2023-08-30 17:42:02,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529532447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:02,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:02,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:42:02,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292859344] [2023-08-30 17:42:02,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:02,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:42:02,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:02,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:42:02,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:42:02,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-08-30 17:42:02,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:02,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-08-30 17:42:02,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:02,877 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 17:42:02,877 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:42:02,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-08-30 17:42:02,879 INFO L137 encePairwiseOnDemand]: 95/100 looper letters, 4 selfloop transitions, 5 changer transitions 0/11 dead transitions. [2023-08-30 17:42:02,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 11 transitions, 64 flow [2023-08-30 17:42:02,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:42:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:42:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2023-08-30 17:42:02,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2023-08-30 17:42:02,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 214 transitions. [2023-08-30 17:42:02,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 214 transitions. [2023-08-30 17:42:02,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:02,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 214 transitions. [2023-08-30 17:42:02,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,888 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,888 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 54 flow. Second operand 4 states and 214 transitions. [2023-08-30 17:42:02,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 11 transitions, 64 flow [2023-08-30 17:42:02,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 54 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 17:42:02,889 INFO L231 Difference]: Finished difference. Result has 20 places, 11 transitions, 46 flow [2023-08-30 17:42:02,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=20, PETRI_TRANSITIONS=11} [2023-08-30 17:42:02,891 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2023-08-30 17:42:02,891 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 46 flow [2023-08-30 17:42:02,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:02,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:02,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:42:02,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 17:42:02,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash 23964701, now seen corresponding path program 1 times [2023-08-30 17:42:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597656750] [2023-08-30 17:42:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:02,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:42:02,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 17:42:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:42:02,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 17:42:02,932 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 17:42:02,933 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-30 17:42:02,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 17:42:02,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:42:02,936 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-30 17:42:02,940 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 17:42:02,940 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 17:42:02,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:42:02 BasicIcfg [2023-08-30 17:42:02,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 17:42:02,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 17:42:02,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 17:42:02,960 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 17:42:02,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:41:59" (3/4) ... [2023-08-30 17:42:02,962 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 17:42:02,991 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 17:42:02,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 17:42:02,992 INFO L158 Benchmark]: Toolchain (without parser) took 4497.34ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 53.6MB in the beginning and 53.0MB in the end (delta: 614.3kB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2023-08-30 17:42:02,993 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 50.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:42:02,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.65ms. Allocated memory is still 77.6MB. Free memory was 53.4MB in the beginning and 34.6MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 17:42:02,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.71ms. Allocated memory is still 77.6MB. Free memory was 34.6MB in the beginning and 55.9MB in the end (delta: -21.3MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2023-08-30 17:42:02,994 INFO L158 Benchmark]: Boogie Preprocessor took 43.17ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 54.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:42:02,994 INFO L158 Benchmark]: RCFGBuilder took 384.21ms. Allocated memory is still 77.6MB. Free memory was 54.5MB in the beginning and 42.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 17:42:02,994 INFO L158 Benchmark]: TraceAbstraction took 3483.24ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 41.5MB in the beginning and 56.1MB in the end (delta: -14.6MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-08-30 17:42:02,995 INFO L158 Benchmark]: Witness Printer took 31.87ms. Allocated memory is still 113.2MB. Free memory was 56.1MB in the beginning and 53.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 17:42:02,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 50.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.65ms. Allocated memory is still 77.6MB. Free memory was 53.4MB in the beginning and 34.6MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.71ms. Allocated memory is still 77.6MB. Free memory was 34.6MB in the beginning and 55.9MB in the end (delta: -21.3MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.17ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 54.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 384.21ms. Allocated memory is still 77.6MB. Free memory was 54.5MB in the beginning and 42.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3483.24ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 41.5MB in the beginning and 56.1MB in the end (delta: -14.6MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * Witness Printer took 31.87ms. Allocated memory is still 113.2MB. Free memory was 56.1MB in the beginning and 53.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 55 PlacesBefore, 15 PlacesAfterwards, 51 TransitionsBefore, 11 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 592 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 269, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 126, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 269, independent: 70, independent conditional: 0, independent unconditional: 70, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 126, unknown conditional: 0, unknown unconditional: 126] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id; [L694] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, g=0, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L687] 1 g = 17 VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, g=17] [L690] 1 return ((void *)0); [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, D={4:0}, \old(cond)=0, \result={0:0}, arg={0:0}, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: 694]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 72 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 210 IncrementalHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 3 mSDtfsCounter, 210 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-30 17:42:03,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE